PREMANT district heating pipe
Vent
Description
Vents are pre-insulated in the factory in the same way as the plastic casing pipe, and they conform to EN448. The insula-
tion protection on the front of the vent nozzle is provided by a heat-shrunk end cap. The branch is made with a T-piece to
EN 10253 and welded-on pipe cylinders, or by extruding the base pipe.
The vent ball valve is manufactured from stainless steel 1.4301, and is supplied complete with plugs. The inner thread
corresponds to the nominal width of the vent. All the exposed parts of the valve are made of stainless steel. The nozzle
height (h) and the nominal width can be changed at the customer's request.
PRE 6.322
Main pipe
DN
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
800
d
DS1
DS2
DS3
L
m
m
m
m
mm
mm
mm
33.7
90
110
125
1000
42.4
110
125
140
1000
48.3
110
125
140
1000
60.3
125
140
160
1000
76.1
140
160
180
1000
88.9
160
180
200
1000
114.3
200
225
250
1000
139.7
225
250
280
1000
168.3
250
280
315
1000
219.1
315
355
400
1000
273.0
400
450
500
1000
323.9
450
500
560
1000
355.6
500
560
630
1000
406.4
560
630
670
1000
457.2
630
670
710
1000
508.0
710
800
900
1000
610.0
800
900
1000
1200
711.0
900
1000
1100
1200
813.0
1000
1100
1200
1200
h = height of vent from axis of main pipe
L = length of main pipe
Vent
Weight
DN
D
h
DS1
mm
mm
kg
25
90
650
5.3
25
90
650
6.6
25
90
660
7.1
25
90
660
8.2
32
110
670
10.6
32
110
680
11.9
32
110
690
15.6
40
110
700
18.9
40
110
720
23.5
40
110
740
32.6
50
125
840
47.5
50
125
860
59.8
50
125
880
66.5
50
125
900
82.9
50
125
930
94.4
50
125
1000
107.8
50
125
1050
139.6
50
125
1100
176.9
50
125
1150
216.8
DS2
kg
5.6
6.8
7.3
8.4
11.0
12.3
16.3
19.7
24.5
34.4
50.2
62.9
70.7
88.2
97.9
116.6
149.1
187.2
228.3
DS3
kg
5.8
7.1
7.5
8.7
11.3
12.8
17.0
20.7
25.9
36.7
53.3
67.1
76.0
91.7
101.4
126.0
159.4
198.7
241.3
23.5.2023 BGP
Subject to technical changes
h
L
